Mobile Agents Approach for Transaction Processing in Mobile Database Systems – Mobile Learning Environment
نویسندگان
چکیده
منابع مشابه
Transaction Processing in Mobile, Heterogeneous Database Systems
As technological advances are made in software and hardware, the feasibility of accessing information “any time, anywhere” is becoming a reality. Furthermore, the diversity and amount of information available to a given user is increasing at a rapid rate. In a mobile computing environment, a potentially large number of users may simultaneously access the global data; therefore, there is a need ...
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In database applications, application programs are performed on clients and issue requests to object servers. Then, the object servers send responses to the clients. On the other hand, programs named agents move to object servers where the agents manipulate objects in a mobile agent approach. If agents complete manipulating objects in the servers, the agents move to other servers. If an agent c...
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In a real-time database system RTDBS, transactions have to be completed before their deadlines and all the accessed temporal data objects have to be valid. Besides meeting these timing constraints, a RTDBS needs to observe data consistency constraints as well 44. Diierent transactions scheduling algorithms and concurrency control protocols have been proposed to satisfy these constraints 44. The...
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Distributed systems are expected to support mobile computations executed over a computer network of xed and mobile hosts. This paper examines the requirements for structuring such mobile computations that access shared data in a database, argues that opennesting can better facilitate these requirements, and proposes an Open-Nested Transaction model in a mobile environment using the notion of Re...
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Transaction processing in a Mobile Database System (MDS) is more complex because of unlimited mobility of the Mobile Unit (MU). The handoff and frequent failure of mobile unit makes it tricky to store log records and access it for recovery. In this paper, we present a new log management scheme, which uses a mobile-agent-based framework to facilitate efficient transaction processing during hando...
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ژورنال
عنوان ژورنال: Asian Association of Open Universities Journal
سال: 2011
ISSN: 1858-3431
DOI: 10.1108/aaouj-06-01-2011-b008